/////////////////////////////////////////////////////////////////////////////
// 2023 -
//open source under Apache License Version 2.0
/////////////////////////////////////////////////////////////////////////////
//  Modifications by Kumo Inc.
// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#include <kmhdfs/client/ec_chunk.h>

namespace Hdfs {
namespace Internal {

ECChunk::ECChunk(std::shared_ptr<ByteBuffer> buffer) : allZero(false) {
    chunkBuffer = buffer;
}

ECChunk::ECChunk(const std::shared_ptr<ByteBuffer> & buffer, int offset, int len) : allZero(false) {
    std::shared_ptr<ByteBuffer> tmp = std::shared_ptr<ByteBuffer>(buffer->duplicate());
    tmp->position(offset);
    tmp->limit(offset + len);
    chunkBuffer = std::shared_ptr<ByteBuffer>(tmp->slice());
}

std::shared_ptr<ByteBuffer> ECChunk::getBuffer() const {
    return chunkBuffer;
}

bool ECChunk::isAllZero() const {
    return allZero;
}

void ECChunk::setAllZero(bool _allZero) {
    allZero = _allZero;
}

/**
 * Convert to a bytes array, just for test usage.
 * @return bytes array
 */
std::vector<int8_t> ECChunk::toBytesArray() const {
    std::vector<int8_t> bytesArr(chunkBuffer->remaining());
    // Avoid affecting the original one
    chunkBuffer->mark();
    chunkBuffer->getBytes(&bytesArr[0], bytesArr.size());
    chunkBuffer->reset();

    return bytesArr;
}

}
}
